FX_BOOL considered harmful.

core/include/fxge/fx_ge_apple.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef CORE_INCLUDE_FXGE_FX_GE_APPLE_H_
 #define CORE_INCLUDE_FXGE_FX_GE_APPLE_H_
 
 #if _FXM_PLATFORM_  == _FXM_PLATFORM_APPLE_
 class CFX_QuartzDevice : public CFX_RenderDevice
 {
 public:
     CFX_QuartzDevice();
     ~CFX_QuartzDevice();
-    FX_BOOL Attach(CGContextRef context, int32_t nDeviceClass = FXDC_DISPLAY);
-    FX_BOOL Attach(CFX_DIBitmap* pBitmap);
-    FX_BOOL Create(int32_t width, int32_t height, FXDIB_Format format);
+    bool Attach(CGContextRef context, int32_t nDeviceClass = FXDC_DISPLAY);
+    bool Attach(CFX_DIBitmap* pBitmap);
+    bool Create(int32_t width, int32_t height, FXDIB_Format format);
 
     CGContextRef GetContext();
 
 protected:
     CGContextRef m_pContext;
-    FX_BOOL m_bOwnedBitmap;
+    bool m_bOwnedBitmap;
 };
 #endif
 
 #endif  // CORE_INCLUDE_FXGE_FX_GE_APPLE_H_